Measurement of the differential pressure of liquid metals
This patent relates to an improved means for measuring the differential pressure between any two points in a process liquid metal coolant loop, wherein the flow of liquid metal in a pipe is opposed by a permanent magnet liquid metal pump until there is almost zero flow shown by a magnetic type flowmeter. The pressure producing the liquid metal flow is inferred from the rate of rotation of the permanent magnet pump. In an alternate embodiment, a differential pressure transducer is coupled to a process pipeline by means of high-temperature bellows or diaphragm seals, and a permanent magnet liquid metal pump in the high-pressure transmission line to the pressure transducer can be utilized either for calibration of the transducer or for determining the process differential pressure as a function of the magnet pump speed. (auth)
- Research Organization:
- Originating Research Org. not identified
- NSA Number:
- NSA-33-011276
- Assignee:
- to U.S. Energy Research and Development Administration
- Patent Number(s):
- PAT-APPL-466,347.; US 3902369
- OSTI ID:
- 4130399
- Resource Relation:
- Patent File Date: 1974 May 01; Other Information: G01L9/00. Orig. Receipt Date: 30-JUN-76
- Country of Publication:
- United States
- Language:
- English
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